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首页> 外文期刊>Pollution >Microbeads in Sediment, Dreissenid Mussels, and Anurans in the Littoral Zone of the Upper St. Lawrence River, New York.
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Microbeads in Sediment, Dreissenid Mussels, and Anurans in the Littoral Zone of the Upper St. Lawrence River, New York.

机译：纽约上游圣劳伦斯河沿岸带沉积物中的微珠，Dreissenid贻贝和无尾藻。

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Global plastic production has exceeded 300 million tons per year (Plastics Europe, 2015). In the marine and freshwater environments, larger plastics abrade and photo-degrade resulting in persistent environmental microplastics that are not effectively removed by existing wastewater treatment plants (WWTPs). The ecological effects of microplastics on the marine environment are poorly understood, with even less attention to freshwater systems. To assess whether microplastics have infiltrated food webs of shallow nearshore ecosystems of the St. Lawrence River, we sampled four sites along the international section of the St. Lawrence River, from Alexandria Bay to Waddington, NY. Twelve sediment samples along with one hundred and forty-nine Dreissenid mussels (Dreissena polymorpha and D. bugensis) were collected from the littoral zone, and forty one road-killed anuran amphibian specimens were collected adjacent to the river. Sediment subsamples at two of four sediment sampling sites contained plastic micro-particles. No microbeads were detected within any of the Dreissenid mussels or anuran digestive tract samples. The Dreissenids were likely too small to ingest microbeads greater than 35 microns. Microplastics congregating in the littoral zone may pose a threat within the food web through potential ingestion, requiring further methodological development.
机译：全球塑料产量每年超过3亿吨（Plastics Europe，2015）。在海洋和淡水环境中，较大的塑料磨损和光降解会导致持久的环境微塑料，而现有的污水处理厂（WWTP）无法有效去除这些塑料。人们对微塑料对海洋环境的生态影响知之甚少，而对淡水系统的关注则更少。为了评估微塑料是否已渗透到圣劳伦斯河浅海近岸生态系统的食物网中，我们对圣劳伦斯河国际部分的四个站点进行了采样，这些站点从亚历山大港到纽约州沃丁顿。从沿海地区收集了十二个沉积物样品以及一百四十九个Dreissenid贻贝（Dreissena polymorpha和D. bugensis），并在河边收集了四十一个道路杀害的阿努兰两栖动物标本。四个沉积物采样点中两个采样点的沉积物子采样包含塑料微粒。在任何Dreissenid贻贝或无核消化道样品中均未检测到微珠。 Dreissenids可能太小而无法摄取大于35微米的微珠。聚积在沿海区域的微塑料可能通过潜在的摄入对食物网构成威胁，需要进一步的方法学发展。

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